Possible to swap RWD rear diff carrier into xDrive

F3085258 · 06-08-2019, 12:16 PM

Is it possible to swap the rear diff housing and axles fro s drive into x drive? I would like an LSD in my xDrive. Can get a Quaife but it is expensive. Might be cheaper to buy used diff housing and axles from eBay and swap in and then buy the M LSD.

IK6SPEED · 06-08-2019, 04:32 PM

Quote:

Originally Posted by F3085258

Is it possible to swap the rear diff housing and axles fro s drive into x drive? I would like an LSD in my xDrive. Can get a Quaife but it is expensive. Might be cheaper to buy used diff housing and axles from eBay and swap in and then buy the M LSD.

The 3.15 XDrive and RWD unit are compatible - no need to do all that.

But the LSD 3.15 units are sold out and discontinued.

You waited too long.

andino · 06-08-2019, 04:49 PM

If you're buying the m lsd you don't need the rear diff housing. m lsd is a ready to install pumpkin. If you're LCI, you also need the pre-lci driveshaft in order to use the 3.15 LSD

IK6SPEED · 06-08-2019, 06:39 PM

Quote:

Originally Posted by andino

If you're buying the m lsd you don't need the rear diff housing. m lsd is a ready to install pumpkin. If you're LCI, you also need the pre-lci driveshaft in order to use the 3.15 LSD

LCI did not use 3.15 final, which is why those were not put on sale.

Beek · 06-08-2019, 06:53 PM

Has anyone added LSD to a 340xi? If so I'd love to hear the details and results.

programmrz · 02-20-2021, 02:18 PM

The rear diffs don't look to be compatible. The RWD pumpkpin sticks out about an inch longer than the xDrive model

heifetz17 · 02-20-2021, 02:38 PM

I’m genuinely curious here: would an LSD affect in any way how Xdrive distributes power to individual wheels when it detects slippage?

Wires · 02-21-2021, 07:02 PM

Quote:

Originally Posted by heifetz17

I’m genuinely curious here: would an LSD affect in any way how Xdrive distributes power to individual wheels when it detects slippage?

It should be way better. Issue with "x drive" is you really only get 2WD. With the locking LSD, then you get 3WD under slipping conditions.

06-08-2019, 12:16 PM	#1
F3085258 Private First Class 79 Rep 168 Posts Drives: 2016 X5M Join Date: Mar 2019 Location: Canada iTrader: (0)	Possible to swap RWD rear diff carrier into xDrive Is it possible to swap the rear diff housing and axles fro s drive into x drive? I would like an LSD in my xDrive. Can get a Quaife but it is expensive. Might be cheaper to buy used diff housing and axles from eBay and swap in and then buy the M LSD.
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06-08-2019, 04:49 PM	#3
andino Captain 480 Rep 681 Posts Drives: F31 328i xdrive Join Date: Jan 2019 Location: norcal iTrader: (2)	If you're buying the m lsd you don't need the rear diff housing. m lsd is a ready to install pumpkin. If you're LCI, you also need the pre-lci driveshaft in order to use the 3.15 LSD __________________ 2016 328ix F31 - SOLD! 2006 997.1 C4S
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06-08-2019, 06:53 PM	#5
Beek Major 707 Rep 1,170 Posts Drives: Most folks crazy. Join Date: Dec 2015 Location: The Twin Cities iTrader: (0)	Has anyone added LSD to a 340xi? If so I'd love to hear the details and results. __________________ '16 340xi Mineral Grey/Black Leather, MPSS on 18" 398 Orbit Grey wheels, ZF 8HP50, MPPSK+CF Tips, ZTR, ZMP, ZTP, ZCW, ZDA, ZDB, Black Kidney Grilles. '09 Outback for a beater and grocery getter.
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02-20-2021, 02:18 PM	#6
programmrz New Member 4 Rep 11 Posts Drives: 2015 428xi Join Date: Dec 2020 Location: Atlanta GA iTrader: (0)	The rear diffs don't look to be compatible. The RWD pumpkpin sticks out about an inch longer than the xDrive model
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02-20-2021, 02:38 PM	#7
heifetz17 Second Lieutenant 90 Rep 234 Posts Drives: 2013 328xi Join Date: Oct 2020 Location: Montana iTrader: (0)	I’m genuinely curious here: would an LSD affect in any way how Xdrive distributes power to individual wheels when it detects slippage?
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